摘要
目的探讨磁敏感加权成像(susceptibility weighted imaging,SWI)技术诊断膝关节半月板撕裂的可行性。方法对40名临床怀疑半月板损伤患者,行MRI T1WI和T2WI-FS、SWI序列扫描,以膝关节镜为金标准对照,比较SWI与T1WI及T2WI-FS诊断半月板撕裂的敏感性、特异性、准确性和诊断效果。结果 T1WI序列敏感性为76.3%,特异性为50.0%,准确性为75.0%;T2WI-FS序列敏感性为71.1%,特异性为100.0%,准确性为72.5%;SWI序列敏感性为94.7%,特异性为50.0%,准确性为92.5%。T1WI序列和T2WI-FS序列与SWI相比一致性较差,Kappa值分别为0.391和0.288,诊断效果有显著性差异(P<0.05)。结论 SWI序列能够应用于膝关节半月板撕裂的诊断,且敏感性和准确性优于T1WI序列和T2WI-FS序列。
study the feasibility of susceptibility weighted imaging in diagnosis of meniscus tear of knee joint. Methods Forty patients with suspected meniscus tear of knee joint underwent MRI scanning of T1 WI, T2 WI-FS and SWI sequences. The sensitivity, specificity, accuracy and diagnostic outcome of T1 WI, T2 WI-FS and SWI sequences were compared with arthroseopy as the golden standards. Results The sensitivity, specificity and accuracy of T1WI, T2WI-FS and SWI sequences were 76.3%, 50. 0% and 75.0%, respectively; 71.1%, 100. 0% and 72.5%, respectively; and 94.7%, 50. 0% and 92.5%, respectively, for the diagnosis of meniscus tear of knee joint. The consistency of T1WI and TEWI-FS sequences was poorer than that of SWI sequence in diagnosis of meniscus tear of knee joint （P 〈 0.05 ）. The Kappa value was 0. 391 and 0. 288, respectively, for TEWI-FS and SWI sequences. The diagnostic outcomes of meniscus tear of knee joint were significantly different between T2 WI-FS and SWI sequences （P 〈 0.05 ）. Conclusion The SWI sequence can be used in diagnosis of meniscus tear of knee joint, and its sensitivity and accuracy are better than the T1WI and T, WI-FS secmences.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2012年第19期2002-2004,共3页
Journal of Third Military Medical University
关键词
磁敏感加权成像
半月板
关节镜
susceptibility weighted imaging
meniscus
arthroscopy
